Powerful Firebender {Entrapta X Reader X Azula}

Y/N, a being from planet Earth and a normal teen. Or, that's what everyone thought. Y/N has always felt some sort of connection to the element of fire, but something was... blocking the path to the full potential of this feeling. But then, a portal appears and it takes Y/N to a different galaxy, on a planet everyone calls 'Etheria'....